Finding the Fourth Proportional to 76,785.51, 105,949.98 and 42,793.14

Step by Step Solution

1. Step 1: Write the proportion equation
   76,785.51 : 105,949.98 = 42,793.14 : x
2. Step 2: Convert to fraction form
   76,785.51/105,949.98 = 42,793.14/x
3. Step 3: Cross multiply
   76,785.51x = 105,949.98 × 42,793.14
4. Step 4: Simplify right side
   76,785.51x = 4,533,932,327.14
5. Step 5: Solve for x
   x = 4,533,932,327.14/76,785.51
6. Step 6: Final answer
   x = 59,046.72